Screen.



PATENTED MAY 29, 1906.

M. BENJAMIN.

SCREEN.

APPLIOATION FILED 00T.21. 1905.

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MORRIS BENJAMIN, OF ATLANTA, GEORGIA.

i SC R E E N Specification of Letters Patent.

Patented May 29, 1906.

Application filed October 21,1905. Serial No. 283,802.

To a/ZZ whom it may concern.:

Be it known that I, MORRIS BENJAMIN, a citizen of the United States,residing at Atlanta, in the county of Fulton and State of Georgia, haveinvented certain new and useful Improvements in Screens, of which thefollowing is a specification. f

My invention relates to screen-holders; and

it consists in means whereby a screen may be readily applied andsecurely clamped at the edges to and quickly removed from the frame ofany structure in which a screen may be used.

In the drawings, Figure 1 is a section of part of a grinding-mill,illustrating my improved screen-holder. Fig. 2 is an elevation. Fig. 3is a vertical section on the line 3 3, Fig. 2.

The structure to which the screen X is to be applied has a frame with anopening with side bearings 1 1 and upper and lower bearings 2 2, thelatter being shown as curved, although they may be straight in somecases. It is desired to clamp the edges of the screen against the facesof these bearings, and for this purpose I make use of bands A A, whichbear on the outer face of the screen at top and bottom and press theseedges of the screen against the bearings 2 2, and I also use side bars BB, which bear on and press the side edges of the screen against thebearings 1 1.

To secure a uniform and simultaneous a plication of pressure to all theedges, I ma re each band A in two sections 3 3, preferably flexible, andso connect them at the outer ends with the bars B B that as the twosections are drawn longitudinally together the bars will be moved topress upon the screen. Thus each bar B is provided at its ends withtrunnions 4 4 near the outer edge, so that the inner edge may swing toand from the screen, and the outer end of each band-section 3 is bent toform a hook 5, which passes into a notch in the bar, so that the innerface of the band and the inner edge of the bar are flush. As theband-sections 3 are drawn toward each other the hooks 5 5 swing the barsB B, and thus as pressure is applied by the bands to force the upper andlower edges of the screen against the bearings 2 2 the'bands will alsoshift the bars to press them against the side edges of the screen andforce them against the bearings 1 1.

Any suitable tension means may be employed to draw the band-sections 3 3of each band toward each other. As shown, the tension device consists ofa bracket D on each section, having an ear 6, through which passes ascrew-bolt 7, by tightening which any desired tension may be applied tothe band to contract it against the screen and swing in the bars B B. Itwill be evident that these bars may be dierently constructed andarranged to apply pressure as they are moved by the bands, and, ifdesired, the upper and lower bands may be connected by strips 9.

Without limiting myself to the precise construction shown and described,I claim- 1. The combination with a frame having an opening with upper,lower and side bearings, of a screen with its edges seated on saidbearings, movable bars B, B, for bearing on the side edges of thescreen, and sectional bands A connected to shift the bars and bearing onthe upper and lower edges of the screen, and means forapplying tensionto said bands, substantially as set forth.

2. The combination with a frame having an opening with upper, lower andside bearings, of a screen with its edges seated on said bearings,movable bars B, B, for bearing on the side edges of the screen,sectional fieXible bands A connected to shift the bars and bearing onthe upper and lower edges of the screen, and means for applying tensionto said bands, substantially as set forth.

3. The combination with a frame having an opening and edge bearings, oftwo pivoted bars, two sectional bands engaging said bars at the outerends, and means for drawing the sections of each band longitudinallytoward each other, and for swinging the bars, substantially as setforth.

4. The combination of a frame having side bearings and intermediateupper and lower curved bearings, movable bars B, B, sectional curvedbands connected to shift the bars, and means for drawing together thesections of each bar, substantially as set forth.

5. The combination with the frame having side bearings and upper andlower curved bearings, of bars pivoted to swing opposite the sidebearings, and sectional bands oppo site the curved bearings connected atthe ends to swing the bars, and provided with means for drawing thesections toward each other, substantially as set forth.

6.l yThe combination with the frame having side bearings and upper andlower curved bearings, of bars pivoted to swing opposite the sidebearings, and sectional flexible bands IOO IIO

opposite the curved bearings connected at the ends to swing the bars,and provided with means 'for drawing the sections toward each other,substantially as set forth.

7. The Combination with the frame having side bearings and upper andlower curved bearings, of bars pivoted to swing opposite the sidebearings, sectional bands opposite the curved bearings having hookedends litting notches of the bars, and means for draw- 1o ing thesections of each bar toward each other, substantially as set forth.

In testimony whereof I afx my signature in presence of two witnesses.

MORRIS BENJAMIN. Witnesses:

JAMES F. SAUNDERs, HARRY A. OBRIEN.

